125b
About the 125b PCB
125b is an open source PCB design by motekulo, published on GitHub. It is a 2-layer board measuring 59 × 75 mm, with 50 components from 22 distinct parts.
Other key parts include the L78L05_TO92, TL074 and Electrosmith_Daisy_Seed_Rev4. By type, the board carries 22 resistors, 13 capacitors, 4 connectors, 3 switches, 3 diodes and 2 ICs.
It belongs with the audio designs in this gallery.
From the project
Design for a guitar effects pedal using the Daisy and Pd
A guitar pedal that runs patches prototyped on a Daisy Pod.
ProgPedals is the site dedicated to this pedal, patches, and community.
- For hardware thanks to work on the Dasiy Petal, the Terrarium, Hothouse and the work of Keith Shepherd - Timothy Schoen and other developers (Alex Mitchell, for example) for Plugdata - Wasted Audio for the Heavy hvcc compiler - Graham Wakefield and Gregory Taylor for Generating Sound and Organizing Time
Main components on the 125b
125b bill of materials (BOM)
50 components, 22 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | L78L05_TO92 | TO-92_Inline_Wide_78L05_dc | U1 |
| 1 | TL074 | SOIC-14_3.9x8.7mm_P1.27mm | U2 |
| 1 | Electrosmith_Daisy_Seed_Rev4 | Electrosmith_Daisy_Seed | A1 |
| 1 | Guitar in | Jack_6.35mm_Neutrik_NMJ6HCD2_Horizontal | J1 |
| 1 | Barrel_Jack | BarrelJack_Horizontal | J2 |
| 1 | Conn_02x05_Odd_Even_MountingPin | IDC-Header_2x05_P2.54mm_Vertical | J3 |
| 1 | Guitar out | Jack_6.35mm_Neutrik_NMJ6HCD2_Horizontal | J4 |
| 1 | Knob 1 | Potentiometer_Alps_RK09K_Single_Vertical | RV1 |
| 1 | Knob 2 | Potentiometer_Alps_RK09K_Single_Vertical | RV2 |
| 1 | RotaryEncoder_Switch | RotaryEncoder_Alps_EC12E-Switch_Vertical_H20mm | SW2 |
| 2 | SW_Push | SolderWire-0.5sqmm_1x02_P4.6mm_D0.9mm_OD2.1mm | SW3, SW4 |
| 1 | 1N5819 | D_DO-41_SOD81_P7.62mm_Horizontal | D1 |
| 2 | LED_RAGB | LED_D5.0mm-4_RGB_Wide_Pins | D2, D3 |
| 1 | 100u | C_Radial_D5.0mm_H11.0mm_P2.00mm | C1 |
| 4 | 100n | C_0805_2012Metric | C2, C4, C5, C6 |
| 6 | 1u | C_0805_2012Metric | C3, C8, C10, C11, C12, C13 |
| 2 | 2.2nF | C_0805_2012Metric | C7, C9 |
| 10 | 1M | R_0805_2012Metric | R1, R2, R3, R4, R5, R8, R9, R16 +2 |
| 2 | 3.3K | R_0805_2012Metric | R6, R7 |
| 6 | 1k | R_0805_2012Metric | R10, R11, R12, R13, R14, R15 |
Show 2 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | 100R | R_0805_2012Metric | R18, R19 |
| 2 | 100K | R_0805_2012Metric | R20, R21 |
125b design files
The KiCad project lives in the motekulo/prog1 repository on GitHub; these links point at the commit this page was built from.
- Layouthardware/125b/125b.kicad_pcb
- Schematichardware/125b/125b.kicad_sch
125b: common questions
How big is the 125b PCB?
The 125b measures 59 × 75 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the 125b?
50 components, from 22 distinct parts. The full bill of materials is listed on this page.
Where can I download the 125b design files?
From the motekulo/prog1 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the 125b design in my own project?
The repository has no license, so all rights stay with motekulo. Use it as a reference, and ask the author before reusing the design.
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